package com.scedu.springcloud.springcloud.controller;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import com.scedu.springcloud.springcloud.entity.CommonResult;
import com.scedu.springcloud.springcloud.entity.Payment;
import com.scedu.springcloud.springcloud.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import java.util.List;
import java.util.concurrent.TimeUnit;

@RestController
@Slf4j
public class PaymentController {
    @Autowired
    private PaymentService paymentService;
    @Value("${server.port}")
    private String serverPort; //服务的端口号
    @Resource    //服务发现
    private DiscoveryClient discoveryClient;

    @PostMapping(value = "payment/create")
    public CommonResult create(@RequestBody Payment payment){
        int result=paymentService.create(payment);
       log.info("插入结果："+result);
        if (result>0){
            return  new CommonResult(200,"插入数据库成功,serverPort！"+serverPort,result);
        }else{
            return  new CommonResult(444,"插入数据库失败,serverPort！"+serverPort,result);
        }
    }
    @GetMapping(value = "payment/get/{id}")

    public CommonResult getPaymentById(@PathVariable("id") Long id){

        Payment paymentById = paymentService.getPaymentById(id);
        log.info("查询结果："+paymentById);
        if (paymentById!=null){
            return  new CommonResult(200,"查询数功！,serverPort！"+serverPort,paymentById);
        }else{
            return  new CommonResult(444,"查询数据失败,serverPort！"+serverPort,paymentById);
        }

    }

    //服务发现
    @GetMapping(value = "/payment/discorery")
    public Object discovery(){
        List<String> services = discoveryClient.getServices();//获取服务清单列表
        log.info("获取服务清单列表");
        for (String service : services) {
            log.info("****service:"+service);
        }
        log.info("获取服务实例列表");
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");//获取指定微服务名称下面的具体实例
        for (ServiceInstance instance : instances) {
            log.info(instance.getInstanceId()+"/t"
                    +instance.getHost()+"/t"
                    +instance.getPort()+"/t"
                    +instance.getUri());
        }
        return this.discoveryClient;
    }
    //故意错误超时3秒的控制器
    @GetMapping(value = "payment/timeout")
    @HystrixCommand(fallbackMethod = "getDefaulTimeout",
            commandProperties={@HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds",value = "3000")}) //在需要有熔断机制的方法上添加 @HystrixCommand，
    // 属性fallbackMethod是熔断时返回的方法, 属性commandProperties里的HystrixProperty属性定义过期时间3秒
    public String timeout(){
        try {
            TimeUnit.SECONDS.sleep(5);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return serverPort+" 线程池："+Thread.currentThread().getName();
    }

    //timeout fallback时返回的方法
    public String getDefaulTimeout(){


        log.info("fallback，默认回调函数");
        return  ("fallback 查询数据失败,serverPort！"+serverPort);

    }
    //fallback时返回的方法
    public CommonResult getDefaultPayment(@PathVariable("id") Long id){


        log.info("fallback，默认系统回调函数");
        return  new CommonResult(444,"sys fallback查询数据失败,serverPort！"+serverPort,id);

    }
    @GetMapping(value = "payment/hello/{id}")
    public String hello(@PathVariable("id") Integer id)
    {    log.info("进入 hello id={}",id);
        return "hello id={}"+id;
    }
    //====服务熔断======
    @GetMapping(value = "payment/circuit/{id}")
    @HystrixCommand(fallbackMethod = "circuitBreaker_fallback",
            commandProperties={
                @HystrixProperty(name="circuitBreaker.enabled",value = "true"), //是否开启断路器
                @HystrixProperty(name="circuitBreaker.requestVolumeThreshold",value = "10"), //请求次数
                @HystrixProperty(name="circuitBreaker.sleepWindowInMilliseconds",value = "10000"), //时间窗口期
                @HystrixProperty(name="circuitBreaker.errorThresholdPercentage",value = "60"), //失败率达到多少后跳闸
    }) //在需要有熔断机制的方法上添加 @HystrixCommand，
    // 属性fallbackMethod是熔断时返回的方法, 属性commandProperties里的HystrixProperty属性定义过期时间3秒
    public String circuitBreaker(@PathVariable("id") Integer id)
    {
        log.info("进入 circuitBreaker id={}",id);
        if (id<0)
        {
            throw new RuntimeException("参数id不能为负数");
        }
        String sid= IdUtil.simpleUUID();
        return serverPort+" 线程池："+Thread.currentThread().getName()+" 流水号："+sid;
    }

    //circuitBreaker fallback时返回的方法
    public String circuitBreaker_fallback(@PathVariable("id") Integer id){


        log.info("熔断，默认回调函数");
        return  ("查询数据失败,serverPort！"+serverPort);

    }
}

